Greece Weather Update: Clouds and Showers Forecast for September 17, 2025

The Hellenic National Meteorological Service (EMY) forecasts cloudy conditions across several regions of Greece today, Wednesday, September 17, 2025, with localized rain and possible thunderstorms in some areas.

Northern Greece: Showers and Thunderstorms

In Macedonia and Thrace, expect partly cloudy skies, becoming denser during the midday and afternoon hours. Localized showers or rain are likely, particularly in eastern Macedonia and Thrace, with isolated thunderstorms possible in mountainous areas. Temperatures will range from 16°C to 31°C, slightly cooler in western Macedonia. Winds will blow from variable directions at 3-4 Beaufort, shifting to northerly winds of 4-6 Beaufort by midday.

Ionian Islands, Epirus, Western Sterea, Western Peloponnese

Mostly clear skies are forecast for these regions, with occasional thin clouds. Winds will be variable at 3-4 Beaufort, turning west-northwest by midday and reaching 5-6 Beaufort in the Ionian Sea. Temperatures will range from 17°C to 32°C, with some continental areas hitting 33-34°C. In inland Epirus, minimum temperatures may drop 3-4°C lower.

Thessaly, Eastern Sterea, Evia, Eastern Peloponnese

These areas will enjoy mostly clear weather, with some clouds appearing from midday. Winds will be variable at 3-4 Beaufort, shifting to north-northeast in eastern areas by afternoon. Temperatures will range from 16°C to 33°C, reaching 34°C in some continental areas and up to 28°C in the Sporades.

Cyclades and Crete

Clear skies are expected across the Cyclades and Crete. Winds will blow from the northwest at 4-5 Beaufort, temporarily reaching 6 Beaufort in eastern areas. Temperatures in the Cyclades will range from 19°C to 27-28°C, while Crete will see 20°C to 29-30°C, with southern parts reaching up to 32°C.

Eastern Aegean Islands and Dodecanese

Mostly clear conditions are forecast for these islands. Northerly winds will blow at 4-5 Beaufort, locally reaching 6 Beaufort. Temperatures will range from 21°C to 32°C, with southern areas possibly hitting 33°C.

Attica

Athens and the broader Attica region will experience generally clear skies. Winds will be variable at 3-4 Beaufort, shifting from north-northeast to south-southeast during midday and afternoon. Temperatures will range from 21°C to 32-33°C.

Thessaloniki

In Thessaloniki, partly cloudy skies will prevail, with denser clouds at times. Winds will blow from the north-northwest at 3-4 Beaufort, increasing to 5-6 Beaufort by the afternoon. Temperatures will range from 18°C to 30-31°C.

Additional Notes

• Localized reduced visibility is expected in western and northern Greece, particularly in the early morning.
• Across the country, temperatures will remain steady, reaching 30-32°C in northern mainland areas, the Ionian, and Crete, and up to 33-34°C in other mainland areas and parts of the Dodecanese. In most island regions, temperatures will stay between 27-28°C.
• Winds across the seas will generally blow from the north-northwest at 3-5 Beaufort, locally reaching 6 Beaufort.

For the latest updates, visit the Hellenic National Meteorological Service website.